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United States Department of Agriculture

Agricultural Research Service

Title: An Undescribed New Species of Needle Nematode (Longidorus SP.) Found on Loblolly Pine Seedlings at a South Georgia Nursery

Authors
item Handoo, Zafar
item Fraedrich, S - USDA FOREST SERVICE
item Cram, M - USDA FOREST SERVICE

Submitted to: Journal of Nematology
Publication Type: Abstract Only
Publication Acceptance Date: April 1, 2003
Publication Date: September 1, 2003
Citation: Handoo, Z.A., Fraedrich, S.W., Cram, M.M. 2003. An undescribed new species of needle nematode (longidorus sp.) found on loblolly pine seedlings at a south georgia nursery. Journal of Nematology. 35(3):342.

Technical Abstract: A new Longidorus species was found associated with severely stunted and chlorotic loblolly pine (Pinus taeda L.) seedlings at a south Georgia nursery. It is characterized in having females with a body length of 7-9 mm, lip region slightly swollen, anteriorly flattened, giving the anterior end a rather truncate appearance, long odontostyle that measures 142-160 micrometers, odontophore length 43-45 micrometers, total stylet 185-205 micrometers long, vulva located at 46-52% of body length, and tail bluntly rounded to almost hemispherical. SEM observations revealed additional details of the head region. Males are rare, but present. The new species is closely related to L. macrosoma, L. saginus, L. tarjani and L. longicaudatus, but differs from these species either by the body and stylet length or by the shape of the tail; additional morphological characters further distinguish it from these individual species. Host range studies showed that this nematode prefers pines including loblolly, slash (Pinus elliottii Engelm. var. elliottii) and longleaf pine (P. palustris Mill.), and did not reproduce on nutsedge or grasses used as cover crops by the nursery. Additional information regarding the distribution of this species within the region is needed.

Last Modified: 12/19/2014
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